103443355321 has 2 divisors, whose sum is σ = 103443355322. Its totient is φ = 103443355320.

The previous prime is 103443355273. The next prime is 103443355333. The reversal of 103443355321 is 123553344301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62422524025 + 41020831296 = 249845^2 + 202536^2 .

It is a cyclic number.

It is not a de Polignac number, because 103443355321 - 2¹⁹ = 103442831033 is a prime.

It is not a weakly prime, because it can be changed into another prime (103443355391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51721677660 + 51721677661.

It is an arithmetic number, because the mean of its divisors is an integer number (51721677661).

Almost surely, 2^103443355321 is an apocalyptic number.

It is an amenable number.

103443355321 is a deficient number, since it is larger than the sum of its proper divisors (1).

103443355321 is an equidigital number, since it uses as much as digits as its factorization.

103443355321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64800, while the sum is 34.

Adding to 103443355321 its reverse (123553344301), we get a palindrome (226996699622).

The spelling of 103443355321 in words is "one hundred three billion, four hundred forty-three million, three hundred fifty-five thousand, three hundred twenty-one".